10249 Harz

Last updated
10249 Harz
Discovery [1]
Discovered by C. J. van Houten
I. van Houten-G.
T. Gehrels
Discovery site Palomar Obs.
Discovery date17 October 1960
Designations
(10249) Harz
Named after
 Harz [1]
(German mountain range)
9515 P-L ·1985 TY
main-belt [1] [2]  ·(middle)
background [3]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 55.64 yr (20,323 d)
Aphelion 2.8174 AU
Perihelion 2.3354 AU
2.5764 AU
Eccentricity 0.0935
4.14 yr (1,510 d)
291.52°
0° 14m 17.88s / day
Inclination 3.6347°
51.878°
342.89°
Physical characteristics
Mean diameter
3.15  km (calculated) [4]
3.59±0.26 km [5]
3.631±0.0006  h [6]
3.64±0.01 h [7]
0.20(assumed) [4]
0.261±0.070 [5]
S (assumed) [4]
14.30 [5]
14.4 [2]
14.41±0.17(R) [7]
14.426±0.003(R) [6]
14.82±0.25 [8]
14.88 [4]

    10249 Harz, provisional designation 9515 P-L, is a background asteroid from the central regions of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 17 October 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. [1] The assumed S-type asteroid is likely elongated and has a short rotation period of 3.63 hours. [4] It was named after the German mountain range Harz. [1]

    Contents

    Orbit and classification

    Harz is a non-family asteroid from the main belt's background population. [3] It orbits the Sun in the central main-belt at a distance of 2.3–2.8  AU once every 4 years and 2 months (1,510 days; semi-major axis of 2.58 AU). Its orbit has an eccentricity of 0.09 and an inclination of 4° with respect to the ecliptic. [2] The body's observation arc begins with its official discovery observation at Palomar in October 1960. [1]

    Palomar–Leiden survey

    The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries. [9]

    Physical characteristics

    Harz is an assumed S-type asteroid, which agrees with the measured albedo (see below) by the Wide-field Infrared Survey Explorer (WISE). [4]

    Rotation period

    In October 2010, and December 2014, two rotational lightcurves of Harz were obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. [6] [7] Lightcurve analysis gave a rotation period of 3.631 and 3.64 hours with a brightness amplitude of 0.47 and 0.52 magnitude, respectively, indicating that the body has an elongated shape ( U=2/2 ). [4]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Harz measures between 3.59 kilometers in diameter and its surface has an albedo of 0.26, [5] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.15 kilometers based on an absolute magnitude of 14.88. [4]

    Naming

    This minor planet was named after the Harz mountains, an old German mountain range where silver was mined until the last century. Legend has it that the witches gathered on their broomsticks on a plateau in the Harz mountains on the first day of May. The legendary place where the witches danced is known as Hexentanzplatz . [1] The official naming citation was published by the Minor Planet Center on 1 May 2003 ( M.P.C. 48390). [10]

    Related Research Articles

    10252 Heidigraf, provisional designation 4164 T-1, is a Koronian asteroid from the outer regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey on 26 March 1971, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The likely elongated S-type asteroid has a brightness variation of 0.56 magnitude. It was named after Heidi Graf, a former Head of the ESTEC Communications Office.

    <span class="mw-page-title-main">9999 Wiles</span> Koronian asteroid

    9999 Wiles, provisional designation 4196 T-2, is a Koronian asteroid from the outer region of the asteroid belt, approximately 6 to 7 kilometers in diameter. It was named after British mathematician Andrew Wiles.

    <span class="mw-page-title-main">9994 Grotius</span> Rafita asteroid

    9994 Grotius, provisional designation 4028 P-L, is a stony Rafita asteroid from the middle regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named after Dutch jurist Hugo Grotius.

    8967 Calandra, provisional designation 4878 T-1, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 13 May 1971, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California. It is named after the corn bunting (Emberiza calandra).

    8776 Campestris, provisional designation 2287 T-3, is a stony background asteroid from the central region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 16 October 1977, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, and Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California, United States. The asteroid was named for the tawny pipit, a shorebird.

    <span class="mw-page-title-main">9912 Donizetti</span> Asteroid

    9912 Donizetti, provisional designation 2078 T-3, is a stony Rafita asteroid from the central regions of the asteroid belt, approximately 7 km in diameter. It was discovered during the third Palomar–Leiden Trojan survey in 1977, and named after Italian composer Gaetano Donizetti.

    <span class="mw-page-title-main">9910 Vogelweide</span>

    9910 Vogelweide, provisional designation 3181 T-2, is a stony Koronian asteroid and elongated slow rotator from the outer regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered during the second Palomar–Leiden trojan survey in 1973, and named after German medieval poet Walther von der Vogelweide.

    6805 Abstracta, provisional designation 4600 P-L, is a carbonaceous Themistian asteroid and slow rotator from the outer region of the asteroid belt, approximately 10 kilometers in diameter.

    <span class="mw-page-title-main">10656 Albrecht</span>

    10656 Albrecht is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter. It was named after German astronomer Carl Theodor Albrecht.

    8121 Altdorfer, provisional designation 2572 P-L, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 2 kilometers in diameter. Discovered during the Palomar–Leiden survey in 1960, the asteroid was later named for Renaissance painter Albrecht Altdorfer.

    <span class="mw-page-title-main">1912 Anubis</span>

    1912 Anubis is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter. It was named after the Egyptian deity Anubis.

    5655 Barney, provisional designation 1159 T-2, is a Maria asteroid from the central regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered during the second Palomar–Leiden Trojan survey in 1973, and named for American astronomer Ida Barney in 1994. The stony S-type asteroid has a rotation period of 2.66 hours.

    9826 Ehrenfreund, provisional designation 2114 T-3, is a stony Eoan asteroid from the outer region of the asteroid belt, approximately 7 kilometers in diameter.

    2054 Gawain, provisional designation 4097 P-L, is a dark and elongated asteroid from the outer regions of the asteroid belt, approximately 19 kilometers in diameter. Discovered during the Palomar–Leiden survey at Palomar Observatory in 1960, the asteroid was later named after Gawain, a knight of King Arthur's Round Table in the Arthurian legend.

    1777 Gehrels, also designated 4007 P-L, is a stony asteroid from the middle region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named for astronomer Tom Gehrels, one of the survey's principal investigators and credited discoverer.

    <span class="mw-page-title-main">9694 Lycomedes</span>

    9694 Lycomedes is a Jupiter trojan from the Greek camp, approximately 32 kilometers in diameter. It was discovered during the Palomar–Leiden survey at the Palomar Observatory in 1960 and later named after Lycomedes from Greek mythology. The dark Jovian asteroid is likely elongated in shape and has a rotation period of 18.2 hours.

    9142 Rhesus is a larger Jupiter trojan from the Trojan camp, approximately 42 kilometers in diameter. It was discovered during the third Palomar–Leiden Trojan survey in 1977, and later named after King Rhesus from Greek mythology. The dark D-type asteroid has a rotation period of 7.3 hours.

    3201 Sijthoff, provisional designation 6560 P-L, is a background or Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered during the Palomar–Leiden survey on 24 September 1960, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California, United States. The assumed S-type asteroid has a rotation period of 4.607 hours. It was named after Dutch publisher and popularizer of astronomy, Albert Georg Sijthoff.

    1778 Alfvén, also designated 4506 P-L, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 20 kilometers in diameter.

    12621 Alsufi, provisionally designated 6585 P-L, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by astronomers during the Palomar–Leiden survey in 1960, and named for medieval Persian astronomer Abd al-Rahman al-Sufi.

    References

    1. 1 2 3 4 5 6 7 "10249 Harz (9515 P-L)". Minor Planet Center. Retrieved 1 May 2018.
    2. 1 2 3 4 "JPL Small-Body Database Browser: 10249 Harz (9515 P-L)" (2016-06-08 last obs.). Jet Propulsion Laboratory . Retrieved 1 May 2018.
    3. 1 2 "Asteroid 10249 Harz – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
    4. 1 2 3 4 5 6 7 8 "LCDB Data for (10249) Harz". Asteroid Lightcurve Database (LCDB). Retrieved 1 May 2018.
    5. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv: 1209.5794 . Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. S2CID   46350317.
    6. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv: 1504.04041 . Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. S2CID   8342929.
    7. 1 2 3 Chang, Chan-Kao; Lin, Hsing-Wen; Ip, Wing-Huen; Prince, Thomas A.; Kulkarni, Shrinivas R.; Levitan, David; et al. (December 2016). "Large Super-fast Rotator Hunting Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 227 (2): 13. arXiv: 1608.07910 . Bibcode:2016ApJS..227...20C. doi: 10.3847/0067-0049/227/2/20 .
    8. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID   53493339.
    9. ↑ "Minor Planet Discoverers". Minor Planet Center. 2018. Retrieved 1 May 2018.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 1 May 2018.

    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.